Manually resettable hydraulic suction fuse for swimming pools
View Patent ↗A hydraulic suction fuse is mounted in a conventional debris collection trap of a swimming pool, spa or the like, to significantly reduce or eliminate any suction force on the bottom or side wall mounted drain of the swimming pool, spa or the like, as a result of the drain becoming essentially wholly covered by a body part of a person or other drain clogging article. Alternatively, the hydraulic suction fuse may be mounted in a compartment in line between the drain and a suction pump of a swimming pool, spa or the like. Thereby, a person captured by the suction force at the drain will be released and the person is free to move away from the drain essentially instantaneously upon contact with the drain. In one embodiment of the hydraulic suction fuse, the hydraulic suction fuse may be easily manually reset.
1. A hydraulic suction fuse for use with a debris collection trap, said fuse comprising in combination:
a) an apertured cover;
b) a shroud extending about said aperture in said cover;
c) a flexible disc for sealing said aperture in said cover, said disc being captured by said shroud, said disc being adapted to bend to pass through said aperture in said cover in response to a suction force within the trap and to become displaced from said aperture in said cover; and
d) a stem extending from said disc, said stem being adapted to accommodate manually drawing said displaced disc into capture by said shroud to seal said aperture in said cover.
2. A hydraulic suction fuse as set forth in claim 1 including a ring extending from said stem for manual engagement, said ring being adapted to retain said displaced disc proximate said aperture in said cover.
3. A hydraulic suction fuse as set forth in claim 1 wherein said shroud includes a cylinder circumscribing said aperture and said disc and a radially inwardly extending lip for retaining said disc within said cylinder.
4. A hydraulic suction fuse as set forth in claim 3 including a ring extending from said stem and adapted for manual engagement, said ring being adapted to bear against said lip to retain said displaced disc proximate the aperture in said cover.
5. A hydraulic suction fuse for use with a swimming pool or spa, said fuse comprising in combination:
a) a compartment disposed at an elevation below the surface of the water in the swimming pool;
b) an apertured bracket defining the upper end of said compartment;
c) a shroud extending about said aperture in said bracket;
d) a flexible disc for sealing said aperture in said bracket, said disc being captured by said shroud, said disc being adapted to bend to pass through said aperture in said bracket in response to a suction force within said compartment and to become displaced from said aperture in said bracket; and
e) a stem extending from said disc, said stem being adapted to accommodate manually drawing said displaced disc into capture by said shroud to seal said aperture in said bracket.
6. A hydraulic suction fuse as set forth in claim 5 including a ring extending from said stem and adapted for manual engagement, said ring being adapted to retain said displaced disc proximate said aperture in said bracket.
7. A hydraulic suction fuse as set forth in claim 5 wherein said shroud includes a cylinder circumscribing said aperture and said disc and a radially inwardly extending lip for retaining said disc within said cylinder.
8. A hydraulic suction fuse as set forth in claim 7 including a ring extending from said stem for manual engagement, said ring being adapted to bear against said lip to retain said displaced disc proximate said aperture in said bracket.